Home / 13,661.50-18,854.30-8,359.86

Finding the Fourth Proportional to 13,661.50, 18,854.30 and 8,359.86

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Solution

The fourth proportional to 13,661.50, 18,854.30 and 8,359.86 is: 11,537.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.50 : 18,854.30 = 8,359.86 : x
  2. Step 2: Convert to fraction form
    13,661.50/18,854.30 = 8,359.86/x
  3. Step 3: Cross multiply
    13,661.50x = 18,854.30 × 8,359.86
  4. Step 4: Simplify right side
    13,661.50x = 157,619,308.40
  5. Step 5: Solve for x
    x = 157,619,308.40/13,661.50
  6. Step 6: Final answer
    x = 11,537.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.